Connected: An Internet Encyclopedia
RFC 1812 - 5.2 FORWARDING WALK-THROUGH

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### 5.2 FORWARDING WALK-THROUGH

There is no separate specification of the forwarding function in IP. Instead, forwarding is covered by the protocol specifications for the internet layer protocols ([INTERNET:1], [INTERNET:2], [INTERNET:3], [INTERNET:8], and [ROUTE:11]).

5.2.1 Forwarding Algorithm

5.2.1.1 General
5.2.1.2 Unicast
5.2.1.3 Multicast

5.2.2 IP Header Validation
5.2.3 Local Delivery Decision
5.2.4 Determining the Next Hop Address

5.2.4.1 IP Destination Address
5.2.4.2 Local/Remote Decision
5.2.4.3 Next Hop Address
5.2.4.4 Administrative Preference
5.2.4.5 Load Splitting

5.2.5 Unused IP Header Bits: RFC-791 Section 3.1
5.2.6 Fragmentation and Reassembly: RFC-791 Section 3.2
5.2.7 Internet Control Message Protocol - ICMP

5.2.7.1 Destination Unreachable
5.2.7.2 Redirect
5.2.7.3 Time Exceeded

5.2.8 INTERNET GROUP MANAGEMENT PROTOCOL - IGMP

Next: 5.2.1 Forwarding Algorithm

Connected: An Internet Encyclopedia
RFC 1812 - 5.2 FORWARDING WALK-THROUGH